From: Emil Medve <Emilian.Medve@Freescale.com>
To: <devel@driverdev.osuosl.org>, <linuxppc-dev@lists.ozlabs.org>,
        <linux-kernel@vger.kernel.org>
CC: Geoff Thorpe <Geoff.Thorpe@Freescale.com>
Subject: [RFC 08/10] fsl_qman: Add debugfs support
Date: Wed, 4 Feb 2015 08:48:40 -0600
Message-ID: <1423061322-16059-9-git-send-email-Emilian.Medve@Freescale.com>
In-Reply-To: <1423061322-16059-1-git-send-email-Emilian.Medve@Freescale.com>
References: <1423061322-16059-1-git-send-email-Emilian.Medve@Freescale.com>
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From: Geoff Thorpe <Geoff.Thorpe@freescale.com>

Change-Id: I59a75a91b289193b5ab1d30a08f60119dc4d7568
Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
---
 drivers/staging/fsl_qbman/Kconfig        |    7 +
 drivers/staging/fsl_qbman/Makefile       |    2 +
 drivers/staging/fsl_qbman/qman_debugfs.c | 1326 ++++++++++++++++++++++++++++++
 drivers/staging/fsl_qbman/qman_high.c    |   58 ++
 drivers/staging/fsl_qbman/qman_private.h |    8 +
 include/linux/fsl_qman.h                 |    6 +
 6 files changed, 1407 insertions(+)
 create mode 100644 drivers/staging/fsl_qbman/qman_debugfs.c

diff --git a/drivers/staging/fsl_qbman/Kconfig b/drivers/staging/fsl_qbman/Kconfig
index 66a8361..9e2a25f 100644
--- a/drivers/staging/fsl_qbman/Kconfig
+++ b/drivers/staging/fsl_qbman/Kconfig
@@ -125,6 +125,13 @@ config FSL_QMAN_TEST_STASH_POTATO
 	  across a series of FQs scheduled to different portals (and cpus), with
 	  DQRR, data and context stashing always on.
 
+config FSL_QMAN_DEBUGFS
+	tristate "QMan debugfs interface"
+	depends on DEBUG_FS
+	default y
+	---help---
+	  This option compiles debugfs code for QMan.
+
 # H/w settings that can be hard-coded for now.
 config FSL_QMAN_FQD_SZ
 	int "size of Frame Queue Descriptor region"
diff --git a/drivers/staging/fsl_qbman/Makefile b/drivers/staging/fsl_qbman/Makefile
index 0287eab..5e93fff 100644
--- a/drivers/staging/fsl_qbman/Makefile
+++ b/drivers/staging/fsl_qbman/Makefile
@@ -19,3 +19,5 @@ obj-$(CONFIG_FSL_QMAN_TEST)			 += qman_tester.o
 qman_tester-y					  = qman_test.o
 qman_tester-$(CONFIG_FSL_QMAN_TEST_HIGH)	 += qman_test_high.o
 qman_tester-$(CONFIG_FSL_QMAN_TEST_STASH_POTATO) += qman_test_hotpotato.o
+obj-$(CONFIG_FSL_QMAN_DEBUGFS)			 += qman_debugfs_interface.o
+qman_debugfs_interface-y			  = qman_debugfs.o
diff --git a/drivers/staging/fsl_qbman/qman_debugfs.c b/drivers/staging/fsl_qbman/qman_debugfs.c
new file mode 100644
index 0000000..f5ab16d
--- /dev/null
+++ b/drivers/staging/fsl_qbman/qman_debugfs.c
@@ -0,0 +1,1326 @@
+/* Copyright 2010-2011 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *	 notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *	 notice, this list of conditions and the following disclaimer in the
+ *	 documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Freescale Semiconductor nor the
+ *	 names of its contributors may be used to endorse or promote products
+ *	 derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "qman_private.h"
+
+#define MAX_FQID (0x00ffffff)
+#define QM_FQD_BLOCK_SIZE     64
+#define QM_FQD_AR	      (0xC10)
+
+static u32 fqid_max;
+static u64 qman_ccsr_start;
+static u64 qman_ccsr_size;
+
+static const char * const state_txt[] = {
+	"Out of Service",
+	"Retired",
+	"Tentatively Scheduled",
+	"Truly Scheduled",
+	"Parked",
+	"Active, Active Held or Held Suspended",
+	"Unknown State 6",
+	"Unknown State 7",
+	NULL,
+};
+
+static const u8 fqd_states[] = {
+	QM_MCR_NP_STATE_OOS, QM_MCR_NP_STATE_RETIRED, QM_MCR_NP_STATE_TEN_SCHED,
+	QM_MCR_NP_STATE_TRU_SCHED, QM_MCR_NP_STATE_PARKED,
+	QM_MCR_NP_STATE_ACTIVE};
+
+struct mask_to_text {
+	u16 mask;
+	const char *txt;
+};
+
+struct mask_filter_s {
+	u16 mask;
+	u8 filter;
+};
+
+static const struct mask_filter_s mask_filter[] = {
+	{QM_FQCTRL_PREFERINCACHE, 0},
+	{QM_FQCTRL_PREFERINCACHE, 1},
+	{QM_FQCTRL_HOLDACTIVE, 0},
+	{QM_FQCTRL_HOLDACTIVE, 1},
+	{QM_FQCTRL_AVOIDBLOCK, 0},
+	{QM_FQCTRL_AVOIDBLOCK, 1},
+	{QM_FQCTRL_FORCESFDR, 0},
+	{QM_FQCTRL_FORCESFDR, 1},
+	{QM_FQCTRL_CPCSTASH, 0},
+	{QM_FQCTRL_CPCSTASH, 1},
+	{QM_FQCTRL_CTXASTASHING, 0},
+	{QM_FQCTRL_CTXASTASHING, 1},
+	{QM_FQCTRL_ORP, 0},
+	{QM_FQCTRL_ORP, 1},
+	{QM_FQCTRL_TDE, 0},
+	{QM_FQCTRL_TDE, 1},
+	{QM_FQCTRL_CGE, 0},
+	{QM_FQCTRL_CGE, 1}
+};
+
+static const struct mask_to_text fq_ctrl_text_list[] = {
+	{
+		.mask = QM_FQCTRL_PREFERINCACHE,
+		.txt = "Prefer in cache",
+	},
+	{
+		.mask = QM_FQCTRL_HOLDACTIVE,
+		.txt =	"Hold active in portal",
+	},
+	{
+		.mask = QM_FQCTRL_AVOIDBLOCK,
+		.txt = "Avoid Blocking",
+	},
+	{
+		.mask = QM_FQCTRL_FORCESFDR,
+		.txt = "High-priority SFDRs",
+	},
+	{
+		.mask = QM_FQCTRL_CPCSTASH,
+		.txt = "CPC Stash Enable",
+	},
+	{
+		.mask = QM_FQCTRL_CTXASTASHING,
+		.txt =	"Context-A stashing",
+	},
+	{
+		.mask = QM_FQCTRL_ORP,
+		.txt =	"ORP Enable",
+	},
+	{
+		.mask = QM_FQCTRL_TDE,
+		.txt = "Tail-Drop Enable",
+	},
+	{
+		.mask = QM_FQCTRL_CGE,
+		.txt = "Congestion Group Enable",
+	},
+	{
+		.mask = 0,
+		.txt = NULL,
+	}
+};
+
+static const char *get_fqd_ctrl_text(u16 mask)
+{
+	int i = 0;
+
+	while (fq_ctrl_text_list[i].txt != NULL) {
+		if (fq_ctrl_text_list[i].mask == mask)
+			return fq_ctrl_text_list[i].txt;
+		i++;
+	}
+	return NULL;
+}
+
+static const struct mask_to_text stashing_text_list[] = {
+	{
+		.mask = QM_STASHING_EXCL_CTX,
+		.txt = "FQ Ctx Stash"
+	},
+	{
+		.mask = QM_STASHING_EXCL_DATA,
+		.txt =	"Frame Data Stash",
+	},
+	{
+		.mask = QM_STASHING_EXCL_ANNOTATION,
+		.txt = "Frame Annotation Stash",
+	},
+	{
+		.mask = 0,
+		.txt = NULL,
+	},
+};
+
+static int user_input_convert(const char __user *user_buf, size_t count,
+				unsigned long *val)
+{
+	char buf[12];
+
+	if (count > sizeof(buf) - 1)
+		return -EINVAL;
+	if (copy_from_user(buf, user_buf, count))
+		return -EFAULT;
+	buf[count] = '\0';
+	if (kstrtoul(buf, 0, val))
+		return -EINVAL;
+	return 0;
+}
+
+struct line_buffer_fq {
+	u32 buf[8];
+	u32 buf_cnt;
+	int line_cnt;
+};
+
+static void add_to_line_buffer(struct line_buffer_fq *line_buf, u32 fqid,
+			struct seq_file *file)
+{
+	line_buf->buf[line_buf->buf_cnt] = fqid;
+	line_buf->buf_cnt++;
+	if (line_buf->buf_cnt == 8) {
+		/* Buffer is full, flush it */
+		if (line_buf->line_cnt != 0)
+			seq_puts(file, ",\n");
+		seq_printf(file, "0x%06x,0x%06x,0x%06x,0x%06x,0x%06x,"
+			"0x%06x,0x%06x,0x%06x",
+			line_buf->buf[0], line_buf->buf[1], line_buf->buf[2],
+			line_buf->buf[3], line_buf->buf[4], line_buf->buf[5],
+			line_buf->buf[6], line_buf->buf[7]);
+		line_buf->buf_cnt = 0;
+		line_buf->line_cnt++;
+	}
+}
+
+static void flush_line_buffer(struct line_buffer_fq *line_buf,
+				struct seq_file *file)
+{
+	if (line_buf->buf_cnt) {
+		int y = 0;
+		if (line_buf->line_cnt != 0)
+			seq_puts(file, ",\n");
+		while (y != line_buf->buf_cnt) {
+			if (y+1 == line_buf->buf_cnt)
+				seq_printf(file, "0x%06x", line_buf->buf[y]);
+			else
+				seq_printf(file, "0x%06x,", line_buf->buf[y]);
+			y++;
+		}
+		line_buf->line_cnt++;
+	}
+	if (line_buf->line_cnt)
+		seq_putc(file, '\n');
+}
+
+static struct dentry *dfs_root; /* debugfs root directory */
+
+/*******************************************************************************
+ *  Query Frame Queue Non Programmable Fields
+ ******************************************************************************/
+struct query_fq_np_fields_data_s {
+	u32 fqid;
+};
+static struct query_fq_np_fields_data_s query_fq_np_fields_data = {
+	.fqid = 1,
+};
+
+static int query_fq_np_fields_show(struct seq_file *file, void *offset)
+{
+	int ret;
+	struct qm_mcr_queryfq_np np;
+	struct qman_fq fq;
+
+	fq.fqid = query_fq_np_fields_data.fqid;
+	ret = qman_query_fq_np(&fq, &np);
+	if (ret)
+		return ret;
+	/* Print state */
+	seq_printf(file, "Query FQ Non Programmable Fields Result fqid 0x%x\n",
+			fq.fqid);
+	seq_printf(file, " force eligible pending: %s\n",
+		(np.state & QM_MCR_NP_STATE_FE) ? "yes" : "no");
+	seq_printf(file, " retirement pending: %s\n",
+		(np.state & QM_MCR_NP_STATE_R) ? "yes" : "no");
+	seq_printf(file, " state: %s\n",
+		state_txt[np.state & QM_MCR_NP_STATE_MASK]);
+	seq_printf(file, " fq_link: 0x%x\n", np.fqd_link);
+	seq_printf(file, " odp_seq: %u\n", np.odp_seq);
+	seq_printf(file, " orp_nesn: %u\n", np.orp_nesn);
+	seq_printf(file, " orp_ea_hseq: %u\n", np.orp_ea_hseq);
+	seq_printf(file, " orp_ea_tseq: %u\n", np.orp_ea_tseq);
+	seq_printf(file, " orp_ea_hptr: 0x%x\n", np.orp_ea_hptr);
+	seq_printf(file, " orp_ea_tptr: 0x%x\n", np.orp_ea_tptr);
+	seq_printf(file, " pfdr_hptr: 0x%x\n", np.pfdr_hptr);
+	seq_printf(file, " pfdr_tptr: 0x%x\n", np.pfdr_tptr);
+	seq_printf(file, " is: ics_surp contains a %s\n",
+		(np.is) ? "deficit" : "surplus");
+	seq_printf(file, " ics_surp: %u\n", np.ics_surp);
+	seq_printf(file, " byte_cnt: %u\n", np.byte_cnt);
+	seq_printf(file, " frm_cnt: %u\n", np.frm_cnt);
+	seq_printf(file, " ra1_sfdr: 0x%x\n", np.ra1_sfdr);
+	seq_printf(file, " ra2_sfdr: 0x%x\n", np.ra2_sfdr);
+	seq_printf(file, " od1_sfdr: 0x%x\n", np.od1_sfdr);
+	seq_printf(file, " od2_sfdr: 0x%x\n", np.od2_sfdr);
+	seq_printf(file, " od3_sfdr: 0x%x\n", np.od3_sfdr);
+	return 0;
+}
+
+static int query_fq_np_fields_open(struct inode *inode,
+					struct file *file)
+{
+	return single_open(file, query_fq_np_fields_show, NULL);
+}
+
+static ssize_t query_fq_np_fields_write(struct file *f,
+			const char __user *buf, size_t count, loff_t *off)
+{
+	int ret;
+	unsigned long val;
+
+	ret = user_input_convert(buf, count, &val);
+	if (ret)
+		return ret;
+	if (val > MAX_FQID)
+		return -EINVAL;
+	query_fq_np_fields_data.fqid = (u32)val;
+	return count;
+}
+
+static const struct file_operations query_fq_np_fields_fops = {
+	.owner		= THIS_MODULE,
+	.open		= query_fq_np_fields_open,
+	.read		= seq_read,
+	.write		= query_fq_np_fields_write,
+	.release	= single_release,
+};
+
+/*******************************************************************************
+ *  Frame Queue Programmable Fields
+ ******************************************************************************/
+struct query_fq_fields_data_s {
+	u32 fqid;
+};
+
+static struct query_fq_fields_data_s query_fq_fields_data = {
+	.fqid = 1,
+};
+
+static int query_fq_fields_show(struct seq_file *file, void *offset)
+{
+	int ret;
+	struct qm_fqd fqd;
+	struct qman_fq fq;
+	int i = 0;
+
+	memset(&fqd, 0, sizeof(struct qm_fqd));
+	fq.fqid = query_fq_fields_data.fqid;
+	ret = qman_query_fq(&fq, &fqd);
+	if (ret)
+		return ret;
+	seq_printf(file, "Query FQ Programmable Fields Result fqid 0x%x\n",
+			fq.fqid);
+	seq_printf(file, " orprws: %u\n", fqd.orprws);
+	seq_printf(file, " oa: %u\n", fqd.oa);
+	seq_printf(file, " olws: %u\n", fqd.olws);
+
+	seq_printf(file, " cgid: %u\n", fqd.cgid);
+
+	if ((fqd.fq_ctrl & QM_FQCTRL_MASK) == 0)
+		seq_puts(file, " fq_ctrl: None\n");
+	else {
+		i = 0;
+		seq_puts(file, " fq_ctrl:\n");
+		while (fq_ctrl_text_list[i].txt != NULL) {
+			if ((fqd.fq_ctrl & QM_FQCTRL_MASK) &
+					fq_ctrl_text_list[i].mask)
+				seq_printf(file, "  %s\n",
+					fq_ctrl_text_list[i].txt);
+			i++;
+		}
+	}
+	seq_printf(file, " dest_channel: %u\n", fqd.dest.channel);
+	seq_printf(file, " dest_wq: %u\n", fqd.dest.wq);
+	seq_printf(file, " ics_cred: %u\n", fqd.ics_cred);
+	seq_printf(file, " td_mant: %u\n", fqd.td.mant);
+	seq_printf(file, " td_exp: %u\n", fqd.td.exp);
+
+	seq_printf(file, " ctx_b: 0x%x\n", fqd.context_b);
+
+	seq_printf(file, " ctx_a: 0x%llx\n", qm_fqd_stashing_get64(&fqd));
+	/* Any stashing configured */
+	if ((fqd.context_a.stashing.exclusive & 0x7) == 0)
+		seq_puts(file, " ctx_a_stash_exclusive: None\n");
+	else {
+		seq_puts(file, " ctx_a_stash_exclusive:\n");
+		i = 0;
+		while (stashing_text_list[i].txt != NULL) {
+			if ((fqd.fq_ctrl & 0x7) & stashing_text_list[i].mask)
+				seq_printf(file, "  %s\n",
+					stashing_text_list[i].txt);
+			i++;
+		}
+	}
+	seq_printf(file, " ctx_a_stash_annotation_cl: %u\n",
+			fqd.context_a.stashing.annotation_cl);
+	seq_printf(file, " ctx_a_stash_data_cl: %u\n",
+			fqd.context_a.stashing.data_cl);
+	seq_printf(file, " ctx_a_stash_context_cl: %u\n",
+			fqd.context_a.stashing.context_cl);
+	return 0;
+}
+
+static int query_fq_fields_open(struct inode *inode,
+					struct file *file)
+{
+	return single_open(file, query_fq_fields_show, NULL);
+}
+
+static ssize_t query_fq_fields_write(struct file *f,
+			const char __user *buf, size_t count, loff_t *off)
+{
+	int ret;
+	unsigned long val;
+
+	ret = user_input_convert(buf, count, &val);
+	if (ret)
+		return ret;
+	if (val > MAX_FQID)
+		return -EINVAL;
+	query_fq_fields_data.fqid = (u32)val;
+	return count;
+}
+
+static const struct file_operations query_fq_fields_fops = {
+	.owner		= THIS_MODULE,
+	.open		= query_fq_fields_open,
+	.read		= seq_read,
+	.write		= query_fq_fields_write,
+	.release	= single_release,
+};
+
+/*******************************************************************************
+ * Query WQ lengths
+ ******************************************************************************/
+struct query_wq_lengths_data_s {
+	union {
+		u16 channel_wq; /* ignores wq (3 lsbits) */
+		struct {
+			u16 id:13; /* qm_channel */
+			u16 __reserved:3;
+		} __packed channel;
+	};
+};
+static struct query_wq_lengths_data_s query_wq_lengths_data;
+static int query_wq_lengths_show(struct seq_file *file, void *offset)
+{
+	int ret;
+	struct qm_mcr_querywq wq;
+	int i;
+
+	memset(&wq, 0, sizeof(struct qm_mcr_querywq));
+	wq.channel.id = query_wq_lengths_data.channel.id;
+	ret = qman_query_wq(0, &wq);
+	if (ret)
+		return ret;
+	seq_printf(file, "Query Result For Channel: 0x%x\n", wq.channel.id);
+	for (i = 0; i < 8; i++)
+		/* mask out upper 4 bits since they are not part of length */
+		seq_printf(file, " wq%d_len : %u\n", i, wq.wq_len[i] & 0x0fff);
+	return 0;
+}
+
+static int query_wq_lengths_open(struct inode *inode,
+					struct file *file)
+{
+	return single_open(file, query_wq_lengths_show, NULL);
+}
+
+static ssize_t query_wq_lengths_write(struct file *f,
+			const char __user *buf, size_t count, loff_t *off)
+{
+	int ret;
+	unsigned long val;
+
+	ret = user_input_convert(buf, count, &val);
+	if (ret)
+		return ret;
+	if (val > 0xfff8)
+		return -EINVAL;
+	query_wq_lengths_data.channel.id = (u16)val;
+	return count;
+}
+
+static const struct file_operations query_wq_lengths_fops = {
+	.owner		= THIS_MODULE,
+	.open		= query_wq_lengths_open,
+	.read		= seq_read,
+	.write		= query_wq_lengths_write,
+	.release	= single_release,
+};
+
+/*******************************************************************************
+ *  Query CGR
+ ******************************************************************************/
+struct query_cgr_s {
+	u8 cgid;
+};
+static struct query_cgr_s query_cgr_data;
+
+static int query_cgr_show(struct seq_file *file, void *offset)
+{
+	int ret;
+	struct qm_mcr_querycgr cgrd;
+	struct qman_cgr cgr;
+	int i, j;
+	u32 mask;
+
+	memset(&cgr, 0, sizeof(cgr));
+	memset(&cgrd, 0, sizeof(cgrd));
+	cgr.cgrid = query_cgr_data.cgid;
+	ret = qman_query_cgr(&cgr, &cgrd);
+	if (ret)
+		return ret;
+	seq_printf(file, "Query CGR id 0x%x\n", cgr.cgrid);
+	seq_printf(file, " wr_parm_g MA: %u, Mn: %u, SA: %u, Sn: %u, Pn: %u\n",
+		cgrd.cgr.wr_parm_g.MA, cgrd.cgr.wr_parm_g.Mn,
+		cgrd.cgr.wr_parm_g.SA, cgrd.cgr.wr_parm_g.Sn,
+		cgrd.cgr.wr_parm_g.Pn);
+
+	seq_printf(file, " wr_parm_y MA: %u, Mn: %u, SA: %u, Sn: %u, Pn: %u\n",
+		cgrd.cgr.wr_parm_y.MA, cgrd.cgr.wr_parm_y.Mn,
+		cgrd.cgr.wr_parm_y.SA, cgrd.cgr.wr_parm_y.Sn,
+		cgrd.cgr.wr_parm_y.Pn);
+
+	seq_printf(file, " wr_parm_r MA: %u, Mn: %u, SA: %u, Sn: %u, Pn: %u\n",
+		cgrd.cgr.wr_parm_r.MA, cgrd.cgr.wr_parm_r.Mn,
+		cgrd.cgr.wr_parm_r.SA, cgrd.cgr.wr_parm_r.Sn,
+		cgrd.cgr.wr_parm_r.Pn);
+
+	seq_printf(file, " wr_en_g: %u, wr_en_y: %u, we_en_r: %u\n",
+		cgrd.cgr.wr_en_g, cgrd.cgr.wr_en_y, cgrd.cgr.wr_en_r);
+
+	seq_printf(file, " cscn_en: %u\n", cgrd.cgr.cscn_en);
+	if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) {
+		seq_puts(file, " cscn_targ_dcp:\n");
+		mask = 0x80000000;
+		for (i = 0; i < 32; i++) {
+			if (cgrd.cgr.cscn_targ & mask)
+				seq_printf(file, "  send CSCN to dcp %u\n",
+								(31 - i));
+			mask >>= 1;
+		}
+
+		seq_puts(file, " cscn_targ_swp:\n");
+		for (i = 0; i < 4; i++) {
+			mask = 0x80000000;
+			for (j = 0; j < 32; j++) {
+				if (cgrd.cscn_targ_swp[i] & mask)
+					seq_printf(file, "  send CSCN to swp"
+						" %u\n", (127 - (i * 32) - j));
+				mask >>= 1;
+			}
+		}
+	} else {
+		seq_printf(file, " cscn_targ: %u\n", cgrd.cgr.cscn_targ);
+	}
+	seq_printf(file, " cstd_en: %u\n", cgrd.cgr.cstd_en);
+	seq_printf(file, " cs: %u\n", cgrd.cgr.cs);
+
+	seq_printf(file, " cs_thresh_TA: %u, cs_thresh_Tn: %u\n",
+		cgrd.cgr.cs_thres.TA, cgrd.cgr.cs_thres.Tn);
+
+	seq_printf(file, " mode: %s\n",
+		(cgrd.cgr.mode & QMAN_CGR_MODE_FRAME) ?
+		"frame count" : "byte count");
+	seq_printf(file, " i_bcnt: %llu\n", qm_mcr_querycgr_i_get64(&cgrd));
+	seq_printf(file, " a_bcnt: %llu\n", qm_mcr_querycgr_a_get64(&cgrd));
+
+	return 0;
+}
+
+static int query_cgr_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, query_cgr_show, NULL);
+}
+
+static ssize_t query_cgr_write(struct file *f, const char __user *buf,
+				size_t count, loff_t *off)
+{
+	int ret;
+	unsigned long val;
+
+	ret = user_input_convert(buf, count, &val);
+	if (ret)
+		return ret;
+	if (val > 0xff)
+		return -EINVAL;
+	query_cgr_data.cgid = (u8)val;
+	return count;
+}
+
+static const struct file_operations query_cgr_fops = {
+	.owner		= THIS_MODULE,
+	.open		= query_cgr_open,
+	.read		= seq_read,
+	.write		= query_cgr_write,
+	.release	= single_release,
+};
+
+/*******************************************************************************
+ *  Test Write CGR
+ ******************************************************************************/
+struct test_write_cgr_s {
+	u64 i_bcnt;
+	u8 cgid;
+};
+static struct test_write_cgr_s test_write_cgr_data;
+
+static int testwrite_cgr_show(struct seq_file *file, void *offset)
+{
+	int ret;
+	struct qm_mcr_cgrtestwrite result;
+	struct qman_cgr cgr;
+	u64 i_bcnt;
+
+	memset(&cgr, 0, sizeof(struct qman_cgr));
+	memset(&result, 0, sizeof(struct qm_mcr_cgrtestwrite));
+	cgr.cgrid = test_write_cgr_data.cgid;
+	i_bcnt = test_write_cgr_data.i_bcnt;
+	ret = qman_testwrite_cgr(&cgr, i_bcnt, &result);
+	if (ret)
+		return ret;
+	seq_printf(file, "CGR Test Write CGR id 0x%x\n", cgr.cgrid);
+	seq_printf(file, " wr_parm_g MA: %u, Mn: %u, SA: %u, Sn: %u, Pn: %u\n",
+		result.cgr.wr_parm_g.MA, result.cgr.wr_parm_g.Mn,
+		result.cgr.wr_parm_g.SA, result.cgr.wr_parm_g.Sn,
+		result.cgr.wr_parm_g.Pn);
+	seq_printf(file, " wr_parm_y MA: %u, Mn: %u, SA: %u, Sn: %u, Pn: %u\n",
+		result.cgr.wr_parm_y.MA, result.cgr.wr_parm_y.Mn,
+		result.cgr.wr_parm_y.SA, result.cgr.wr_parm_y.Sn,
+		result.cgr.wr_parm_y.Pn);
+	seq_printf(file, " wr_parm_r MA: %u, Mn: %u, SA: %u, Sn: %u, Pn: %u\n",
+		result.cgr.wr_parm_r.MA, result.cgr.wr_parm_r.Mn,
+		result.cgr.wr_parm_r.SA, result.cgr.wr_parm_r.Sn,
+		result.cgr.wr_parm_r.Pn);
+	seq_printf(file, " wr_en_g: %u, wr_en_y: %u, we_en_r: %u\n",
+		result.cgr.wr_en_g, result.cgr.wr_en_y, result.cgr.wr_en_r);
+	seq_printf(file, " cscn_en: %u\n", result.cgr.cscn_en);
+	seq_printf(file, " cscn_targ: %u\n", result.cgr.cscn_targ);
+	seq_printf(file, " cstd_en: %u\n", result.cgr.cstd_en);
+	seq_printf(file, " cs: %u\n", result.cgr.cs);
+	seq_printf(file, " cs_thresh_TA: %u, cs_thresh_Tn: %u\n",
+		result.cgr.cs_thres.TA, result.cgr.cs_thres.Tn);
+
+	/* Add Mode for Si 2 */
+	seq_printf(file, " mode: %s\n",
+		(result.cgr.mode & QMAN_CGR_MODE_FRAME) ?
+		"frame count" : "byte count");
+
+	seq_printf(file, " i_bcnt: %llu\n",
+		qm_mcr_cgrtestwrite_i_get64(&result));
+	seq_printf(file, " a_bcnt: %llu\n",
+		qm_mcr_cgrtestwrite_a_get64(&result));
+	seq_printf(file, " wr_prob_g: %u\n", result.wr_prob_g);
+	seq_printf(file, " wr_prob_y: %u\n", result.wr_prob_y);
+	seq_printf(file, " wr_prob_r: %u\n", result.wr_prob_r);
+	return 0;
+}
+
+static int testwrite_cgr_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, testwrite_cgr_show, NULL);
+}
+
+static const struct file_operations testwrite_cgr_fops = {
+	.owner		= THIS_MODULE,
+	.open		= testwrite_cgr_open,
+	.read		= seq_read,
+	.release	= single_release,
+};
+
+
+static int testwrite_cgr_ibcnt_show(struct seq_file *file, void *offset)
+{
+	seq_printf(file, "i_bcnt: %llu\n", test_write_cgr_data.i_bcnt);
+	return 0;
+}
+static int testwrite_cgr_ibcnt_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, testwrite_cgr_ibcnt_show, NULL);
+}
+
+static ssize_t testwrite_cgr_ibcnt_write(struct file *f, const char __user *buf,
+				size_t count, loff_t *off)
+{
+	int ret;
+	unsigned long val;
+
+	ret = user_input_convert(buf, count, &val);
+	if (ret)
+		return ret;
+	test_write_cgr_data.i_bcnt = val;
+	return count;
+}
+
+static const struct file_operations teswrite_cgr_ibcnt_fops = {
+	.owner		= THIS_MODULE,
+	.open		= testwrite_cgr_ibcnt_open,
+	.read		= seq_read,
+	.write		= testwrite_cgr_ibcnt_write,
+	.release	= single_release,
+};
+
+static int testwrite_cgr_cgrid_show(struct seq_file *file, void *offset)
+{
+	seq_printf(file, "cgrid: %u\n", (u32)test_write_cgr_data.cgid);
+	return 0;
+}
+static int testwrite_cgr_cgrid_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, testwrite_cgr_cgrid_show, NULL);
+}
+
+static ssize_t testwrite_cgr_cgrid_write(struct file *f, const char __user *buf,
+				size_t count, loff_t *off)
+{
+	int ret;
+	unsigned long val;
+
+	ret = user_input_convert(buf, count, &val);
+	if (ret)
+		return ret;
+	if (val > 0xff)
+		return -EINVAL;
+	test_write_cgr_data.cgid = (u8)val;
+	return count;
+}
+
+static const struct file_operations teswrite_cgr_cgrid_fops = {
+	.owner		= THIS_MODULE,
+	.open		= testwrite_cgr_cgrid_open,
+	.read		= seq_read,
+	.write		= testwrite_cgr_cgrid_write,
+	.release	= single_release,
+};
+
+/*******************************************************************************
+ *  Query Congestion State
+ ******************************************************************************/
+static int query_congestion_show(struct seq_file *file, void *offset)
+{
+	int ret;
+	struct qm_mcr_querycongestion cs;
+	int i, j, in_cong = 0;
+	u32 mask;
+
+	memset(&cs, 0, sizeof(struct qm_mcr_querycongestion));
+	ret = qman_query_congestion(&cs);
+	if (ret)
+		return ret;
+	seq_puts(file, "Query Congestion Result\n");
+	for (i = 0; i < 8; i++) {
+		mask = 0x80000000;
+		for (j = 0; j < 32; j++) {
+			if (cs.state.__state[i] & mask) {
+				in_cong = 1;
+				seq_printf(file, " cg %u: %s\n", (i*32)+j,
+					"in congestion");
+			}
+			mask >>= 1;
+		}
+	}
+	if (!in_cong)
+		seq_puts(file, " All congestion groups not congested.\n");
+	return 0;
+}
+
+static int query_congestion_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, query_congestion_show, NULL);
+}
+
+static const struct file_operations query_congestion_fops = {
+	.owner		= THIS_MODULE,
+	.open		= query_congestion_open,
+	.read		= seq_read,
+	.release	= single_release,
+};
+
+/*******************************************************************************
+ *  QMan register
+ ******************************************************************************/
+struct qman_register_s {
+	u32 val;
+};
+static struct qman_register_s qman_register_data;
+
+static void init_ccsrmempeek(void)
+{
+	struct device_node *dn;
+	const u32 *regaddr_p;
+
+	dn = of_find_compatible_node(NULL, NULL, "fsl,qman");
+	if (!dn) {
+		pr_info("No fsl,qman node\n");
+		return;
+	}
+	regaddr_p = of_get_address(dn, 0, &qman_ccsr_size, NULL);
+	if (!regaddr_p) {
+		of_node_put(dn);
+		return;
+	}
+	qman_ccsr_start = of_translate_address(dn, regaddr_p);
+	of_node_put(dn);
+}
+/* This function provides access to QMan ccsr memory map */
+static int qman_ccsrmempeek(u32 *val, u32 offset)
+{
+	void __iomem *addr;
+	u64 phys_addr;
+
+	if (!qman_ccsr_start)
+		return -EINVAL;
+
+	if (offset > (qman_ccsr_size - sizeof(u32)))
+		return -EINVAL;
+
+	phys_addr = qman_ccsr_start + offset;
+	addr = ioremap(phys_addr, sizeof(u32));
+	if (!addr) {
+		pr_err("ccsrmempeek, ioremap failed\n");
+		return -EINVAL;
+	}
+	*val = in_be32(addr);
+	iounmap(addr);
+	return 0;
+}
+
+static int qman_ccsrmempeek_show(struct seq_file *file, void *offset)
+{
+	u32 b;
+
+	qman_ccsrmempeek(&b, qman_register_data.val);
+	seq_printf(file, "QMan register offset = 0x%x\n",
+		   qman_register_data.val);
+	seq_printf(file, "value = 0x%08x\n", b);
+
+	return 0;
+}
+
+static int qman_ccsrmempeek_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, qman_ccsrmempeek_show, NULL);
+}
+
+static ssize_t qman_ccsrmempeek_write(struct file *f, const char __user *buf,
+				size_t count, loff_t *off)
+{
+	int ret;
+	unsigned long val;
+
+	ret = user_input_convert(buf, count, &val);
+	if (ret)
+		return ret;
+	/* multiple of 4 */
+	if (val > (qman_ccsr_size - sizeof(u32))) {
+		pr_info("Input 0x%lx > 0x%llx\n",
+			val, (qman_ccsr_size - sizeof(u32)));
+		return -EINVAL;
+	}
+	if (val & 0x3) {
+		pr_info("Input 0x%lx not multiple of 4\n", val);
+		return -EINVAL;
+	}
+	qman_register_data.val = val;
+	return count;
+}
+
+static const struct file_operations qman_ccsrmempeek_fops = {
+	.owner		= THIS_MODULE,
+	.open		= qman_ccsrmempeek_open,
+	.read		= seq_read,
+	.write		= qman_ccsrmempeek_write,
+};
+
+/*******************************************************************************
+ *  QMan state
+ ******************************************************************************/
+static int qman_fqd_state_show(struct seq_file *file, void *offset)
+{
+	struct qm_mcr_queryfq_np np;
+	struct qman_fq fq;
+	struct line_buffer_fq line_buf;
+	int ret, i;
+	u8 *state = file->private;
+	u32 qm_fq_state_cnt[ARRAY_SIZE(fqd_states)];
+
+	memset(qm_fq_state_cnt, 0, sizeof(qm_fq_state_cnt));
+	memset(&line_buf, 0, sizeof(line_buf));
+
+	seq_printf(file, "List of fq ids in state: %s\n", state_txt[*state]);
+
+	for (i = 1; i < fqid_max; i++) {
+		fq.fqid = i;
+		ret = qman_query_fq_np(&fq, &np);
+		if (ret)
+			return ret;
+		if (*state == (np.state & QM_MCR_NP_STATE_MASK))
+			add_to_line_buffer(&line_buf, fq.fqid, file);
+		/* Keep a summary count of all states */
+		if ((np.state & QM_MCR_NP_STATE_MASK) < ARRAY_SIZE(fqd_states))
+			qm_fq_state_cnt[(np.state & QM_MCR_NP_STATE_MASK)]++;
+	}
+	flush_line_buffer(&line_buf, file);
+
+	for (i = 0; i < ARRAY_SIZE(fqd_states); i++) {
+		seq_printf(file, "%s count = %u\n", state_txt[i],
+			   qm_fq_state_cnt[i]);
+	}
+	return 0;
+}
+
+static int qman_fqd_state_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, qman_fqd_state_show, inode->i_private);
+}
+
+static const struct file_operations qman_fqd_state_fops =  {
+	.owner		= THIS_MODULE,
+	.open		= qman_fqd_state_open,
+	.read		= seq_read,
+};
+
+static int qman_fqd_ctrl_show(struct seq_file *file, void *offset)
+{
+	struct qm_fqd fqd;
+	struct qman_fq fq;
+	u32 fq_en_cnt = 0, fq_di_cnt = 0;
+	int ret, i;
+	struct mask_filter_s *data = file->private;
+	const char *ctrl_txt = get_fqd_ctrl_text(data->mask);
+	struct line_buffer_fq line_buf;
+
+	memset(&line_buf, 0, sizeof(line_buf));
+	seq_printf(file, "List of fq ids with: %s :%s\n",
+		ctrl_txt, (data->filter) ? "enabled" : "disabled");
+	for (i = 1; i < fqid_max; i++) {
+		fq.fqid = i;
+		memset(&fqd, 0, sizeof(struct qm_fqd));
+		ret = qman_query_fq(&fq, &fqd);
+		if (ret)
+			return ret;
+		if (data->filter) {
+			if (fqd.fq_ctrl & data->mask)
+				add_to_line_buffer(&line_buf, fq.fqid, file);
+		} else {
+			if (!(fqd.fq_ctrl & data->mask))
+				add_to_line_buffer(&line_buf, fq.fqid, file);
+		}
+		if (fqd.fq_ctrl & data->mask)
+			fq_en_cnt++;
+		else
+			fq_di_cnt++;
+	}
+	flush_line_buffer(&line_buf, file);
+
+	seq_printf(file, "Total FQD with: %s :	enabled = %u\n",
+		   ctrl_txt, fq_en_cnt);
+	seq_printf(file, "Total FQD with: %s : disabled = %u\n",
+		   ctrl_txt, fq_di_cnt);
+	return 0;
+}
+
+/*******************************************************************************
+ *  QMan ctrl CGE, TDE, ORP, CTX, CPC, SFDR, BLOCK, HOLD, CACHE
+ ******************************************************************************/
+static int qman_fqd_ctrl_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, qman_fqd_ctrl_show, inode->i_private);
+}
+
+static const struct file_operations qman_fqd_ctrl_fops =  {
+	.owner		= THIS_MODULE,
+	.open		= qman_fqd_ctrl_open,
+	.read		= seq_read,
+};
+
+/*******************************************************************************
+ *  QMan ctrl summary
+ ******************************************************************************/
+/*******************************************************************************
+ *  QMan summary state
+ ******************************************************************************/
+static int qman_fqd_non_prog_summary_show(struct seq_file *file, void *offset)
+{
+	struct qm_mcr_queryfq_np np;
+	struct qman_fq fq;
+	int ret, i;
+	u32 qm_fq_state_cnt[ARRAY_SIZE(fqd_states)];
+
+	memset(qm_fq_state_cnt, 0, sizeof(qm_fq_state_cnt));
+
+	for (i = 1; i < fqid_max; i++) {
+		fq.fqid = i;
+		ret = qman_query_fq_np(&fq, &np);
+		if (ret)
+			return ret;
+		/* Keep a summary count of all states */
+		if ((np.state & QM_MCR_NP_STATE_MASK) < ARRAY_SIZE(fqd_states))
+			qm_fq_state_cnt[(np.state & QM_MCR_NP_STATE_MASK)]++;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(fqd_states); i++) {
+		seq_printf(file, "%s count = %u\n", state_txt[i],
+			   qm_fq_state_cnt[i]);
+	}
+	return 0;
+}
+
+static int qman_fqd_prog_summary_show(struct seq_file *file, void *offset)
+{
+	struct qm_fqd fqd;
+	struct qman_fq fq;
+	int ret, i , j;
+	u32 qm_prog_cnt[ARRAY_SIZE(mask_filter)/2];
+
+	memset(qm_prog_cnt, 0, sizeof(qm_prog_cnt));
+
+	for (i = 1; i < fqid_max; i++) {
+		memset(&fqd, 0, sizeof(struct qm_fqd));
+		fq.fqid = i;
+		ret = qman_query_fq(&fq, &fqd);
+		if (ret)
+			return ret;
+		/* Keep a summary count of all states */
+		for (j = 0; j < ARRAY_SIZE(mask_filter); j += 2)
+			if ((fqd.fq_ctrl & QM_FQCTRL_MASK) &
+					mask_filter[j].mask)
+				qm_prog_cnt[j/2]++;
+	}
+	for (i = 0; i < ARRAY_SIZE(mask_filter) / 2; i++) {
+		seq_printf(file, "%s count = %u\n",
+			get_fqd_ctrl_text(mask_filter[i*2].mask),
+			   qm_prog_cnt[i]);
+	}
+	return 0;
+}
+
+static int qman_fqd_summary_show(struct seq_file *file, void *offset)
+{
+	int ret;
+
+	/* Display summary of non programmable fields */
+	ret = qman_fqd_non_prog_summary_show(file, offset);
+	if (ret)
+		return ret;
+	seq_puts(file, "-----------------------------------------\n");
+	/* Display programmable fields */
+	ret = qman_fqd_prog_summary_show(file, offset);
+	if (ret)
+		return ret;
+	return 0;
+}
+
+static int qman_fqd_summary_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, qman_fqd_summary_show, NULL);
+}
+
+static const struct file_operations qman_fqd_summary_fops =  {
+	.owner		= THIS_MODULE,
+	.open		= qman_fqd_summary_open,
+	.read		= seq_read,
+};
+
+/*******************************************************************************
+ *  QMan destination work queue
+ ******************************************************************************/
+struct qman_dest_wq_s {
+	u16 wq_id;
+};
+static struct qman_dest_wq_s qman_dest_wq_data = {
+	.wq_id = 0,
+};
+
+static int qman_fqd_dest_wq_show(struct seq_file *file, void *offset)
+{
+	struct qm_fqd fqd;
+	struct qman_fq fq;
+	int ret, i;
+	u16 *wq, wq_id = qman_dest_wq_data.wq_id;
+	struct line_buffer_fq line_buf;
+
+	memset(&line_buf, 0, sizeof(line_buf));
+	/* use vmalloc : need to allocate large memory region and don't
+	 * require the memory to be physically contiguous. */
+	wq = vzalloc(sizeof(u16) * (0xFFFF+1));
+	if (!wq)
+		return -ENOMEM;
+
+	seq_printf(file, "List of fq ids with destination work queue id"
+			" = 0x%x\n", wq_id);
+
+	for (i = 1; i < fqid_max; i++) {
+		fq.fqid = i;
+		memset(&fqd, 0, sizeof(struct qm_fqd));
+		ret = qman_query_fq(&fq, &fqd);
+		if (ret) {
+			vfree(wq);
+			return ret;
+		}
+		if (wq_id == fqd.dest_wq)
+			add_to_line_buffer(&line_buf, fq.fqid, file);
+		wq[fqd.dest_wq]++;
+	}
+	flush_line_buffer(&line_buf, file);
+
+	seq_puts(file, "Summary of all FQD destination work queue values\n");
+	for (i = 0; i < 0xFFFF; i++) {
+		if (wq[i])
+			seq_printf(file, "Channel: 0x%x WQ: 0x%x WQ_ID: 0x%x, "
+				"count = %u\n", i >> 3, i & 0x3, i, wq[i]);
+	}
+	vfree(wq);
+	return 0;
+}
+
+static ssize_t qman_fqd_dest_wq_write(struct file *f, const char __user *buf,
+				      size_t count, loff_t *off)
+{
+	int ret;
+	unsigned long val;
+
+	ret = user_input_convert(buf, count, &val);
+	if (ret)
+		return ret;
+	if (val > 0xFFFF)
+		return -EINVAL;
+	qman_dest_wq_data.wq_id = val;
+	return count;
+}
+
+static int qman_fqd_dest_wq_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, qman_fqd_dest_wq_show, NULL);
+}
+
+static const struct file_operations qman_fqd_dest_wq_fops =  {
+	.owner		= THIS_MODULE,
+	.open		= qman_fqd_dest_wq_open,
+	.read		= seq_read,
+	.write		= qman_fqd_dest_wq_write,
+};
+
+/*******************************************************************************
+ *  QMan Intra-Class Scheduling Credit
+ ******************************************************************************/
+static int qman_fqd_cred_show(struct seq_file *file, void *offset)
+{
+	struct qm_fqd fqd;
+	struct qman_fq fq;
+	int ret, i;
+	u32 fq_cnt = 0;
+	struct line_buffer_fq line_buf;
+
+	memset(&line_buf, 0, sizeof(line_buf));
+	seq_puts(file, "List of fq ids with Intra-Class Scheduling Credit > 0"
+			"\n");
+
+	for (i = 1; i < fqid_max; i++) {
+		fq.fqid = i;
+		memset(&fqd, 0, sizeof(struct qm_fqd));
+		ret = qman_query_fq(&fq, &fqd);
+		if (ret)
+			return ret;
+		if (fqd.ics_cred > 0) {
+			add_to_line_buffer(&line_buf, fq.fqid, file);
+			fq_cnt++;
+		}
+	}
+	flush_line_buffer(&line_buf, file);
+
+	seq_printf(file, "Total FQD with ics_cred > 0 = %d\n", fq_cnt);
+	return 0;
+}
+
+static int qman_fqd_cred_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, qman_fqd_cred_show, NULL);
+}
+
+static const struct file_operations qman_fqd_cred_fops =  {
+	.owner		= THIS_MODULE,
+	.open		= qman_fqd_cred_open,
+	.read		= seq_read,
+};
+
+/* helper macros used in qman_debugfs_module_init */
+#define QMAN_DBGFS_ENTRY(name, mode, parent, data, fops) \
+	do { \
+		d = debugfs_create_file(name, \
+			mode, parent, \
+			data, \
+			fops); \
+		if (d == NULL) { \
+			ret = -ENOMEM; \
+			goto _return; \
+		} \
+	} while (0)
+
+/* dfs_root as parent */
+#define QMAN_DBGFS_ENTRY_ROOT(name, mode, data, fops) \
+	QMAN_DBGFS_ENTRY(name, mode, dfs_root, data, fops)
+
+/* fqd_root as parent */
+#define QMAN_DBGFS_ENTRY_FQDROOT(name, mode, data, fops) \
+	QMAN_DBGFS_ENTRY(name, mode, fqd_root, data, fops)
+
+/* fqd state */
+#define QMAN_DBGFS_ENTRY_FQDSTATE(name, index) \
+	QMAN_DBGFS_ENTRY_FQDROOT(name, S_IRUGO, \
+	(void *)&mask_filter[index], &qman_fqd_ctrl_fops)
+
+static int __init qman_debugfs_module_init(void)
+{
+	int ret = 0;
+	struct dentry *d, *fqd_root;
+	u32 reg;
+
+	fqid_max = 0;
+	init_ccsrmempeek();
+	if (qman_ccsr_start) {
+		if (!qman_ccsrmempeek(&reg, QM_FQD_AR)) {
+			/* extract the size of the FQD window */
+			reg = reg & 0x3f;
+			/* calculate valid frame queue descriptor range */
+			fqid_max = (1 << (reg + 1)) / QM_FQD_BLOCK_SIZE;
+		}
+	}
+	dfs_root = debugfs_create_dir("qman", NULL);
+	fqd_root = debugfs_create_dir("fqd", dfs_root);
+	if (dfs_root == NULL || fqd_root == NULL) {
+		ret = -ENOMEM;
+		pr_err("Cannot create qman/fqd debugfs dir\n");
+		goto _return;
+	}
+	if (fqid_max) {
+		QMAN_DBGFS_ENTRY_ROOT("ccsrmempeek", S_IRUGO | S_IWUGO,
+				NULL, &qman_ccsrmempeek_fops);
+	}
+	QMAN_DBGFS_ENTRY_ROOT("query_fq_np_fields", S_IRUGO | S_IWUGO,
+		&query_fq_np_fields_data, &query_fq_np_fields_fops);
+
+	QMAN_DBGFS_ENTRY_ROOT("query_fq_fields", S_IRUGO | S_IWUGO,
+		&query_fq_fields_data, &query_fq_fields_fops);
+
+	QMAN_DBGFS_ENTRY_ROOT("query_wq_lengths", S_IRUGO | S_IWUGO,
+		&query_wq_lengths_data, &query_wq_lengths_fops);
+
+	QMAN_DBGFS_ENTRY_ROOT("query_cgr", S_IRUGO | S_IWUGO,
+		&query_cgr_data, &query_cgr_fops);
+
+	QMAN_DBGFS_ENTRY_ROOT("query_congestion", S_IRUGO,
+		NULL, &query_congestion_fops);
+
+	QMAN_DBGFS_ENTRY_ROOT("testwrite_cgr", S_IRUGO,
+		NULL, &testwrite_cgr_fops);
+
+	QMAN_DBGFS_ENTRY_ROOT("testwrite_cgr_cgrid", S_IRUGO | S_IWUGO,
+		NULL, &teswrite_cgr_cgrid_fops);
+
+	QMAN_DBGFS_ENTRY_ROOT("testwrite_cgr_ibcnt", S_IRUGO | S_IWUGO,
+		NULL, &teswrite_cgr_ibcnt_fops);
+
+	/* Create files with fqd_root as parent */
+
+	QMAN_DBGFS_ENTRY_FQDROOT("stateoos", S_IRUGO,
+		(void *)&fqd_states[QM_MCR_NP_STATE_OOS], &qman_fqd_state_fops);
+
+	QMAN_DBGFS_ENTRY_FQDROOT("state_retired", S_IRUGO,
+		(void *)&fqd_states[QM_MCR_NP_STATE_RETIRED],
+		&qman_fqd_state_fops);
+
+	QMAN_DBGFS_ENTRY_FQDROOT("state_tentatively_sched", S_IRUGO,
+		(void *)&fqd_states[QM_MCR_NP_STATE_TEN_SCHED],
+		&qman_fqd_state_fops);
+
+	QMAN_DBGFS_ENTRY_FQDROOT("state_truly_sched", S_IRUGO,
+		(void *)&fqd_states[QM_MCR_NP_STATE_TRU_SCHED],
+		&qman_fqd_state_fops);
+
+	QMAN_DBGFS_ENTRY_FQDROOT("state_parked", S_IRUGO,
+		(void *)&fqd_states[QM_MCR_NP_STATE_PARKED],
+		&qman_fqd_state_fops);
+
+	QMAN_DBGFS_ENTRY_FQDROOT("state_active", S_IRUGO,
+		(void *)&fqd_states[QM_MCR_NP_STATE_ACTIVE],
+		&qman_fqd_state_fops);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("cge_enable", 17);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("cge_disable", 16);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("tde_enable", 15);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("tde_disable", 14);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("orp_enable", 13);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("orp_disable", 12);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("ctx_a_stashing_enable", 11);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("ctx_a_stashing_disable", 10);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("cpc_enable", 9);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("cpc_disable", 8);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("sfdr_enable", 7);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("sfdr_disable", 6);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("avoid_blocking_enable", 5);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("avoid_blocking_disable", 4);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("hold_active_enable", 3);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("hold_active_disable", 2);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("prefer_in_cache_enable", 1);
+
+	QMAN_DBGFS_ENTRY_FQDSTATE("prefer_in_cache_disable", 0);
+
+	QMAN_DBGFS_ENTRY_FQDROOT("summary", S_IRUGO,
+		NULL, &qman_fqd_summary_fops);
+
+	QMAN_DBGFS_ENTRY_FQDROOT("wq", S_IRUGO | S_IWUGO,
+		NULL, &qman_fqd_dest_wq_fops);
+
+	QMAN_DBGFS_ENTRY_FQDROOT("cred", S_IRUGO,
+		NULL, &qman_fqd_cred_fops);
+
+	return 0;
+
+_return:
+	debugfs_remove_recursive(dfs_root);
+	return ret;
+}
+
+static void __exit qman_debugfs_module_exit(void)
+{
+	debugfs_remove_recursive(dfs_root);
+}
+
+module_init(qman_debugfs_module_init);
+module_exit(qman_debugfs_module_exit);
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/drivers/staging/fsl_qbman/qman_high.c b/drivers/staging/fsl_qbman/qman_high.c
index 39840be..8523da9 100644
--- a/drivers/staging/fsl_qbman/qman_high.c
+++ b/drivers/staging/fsl_qbman/qman_high.c
@@ -1765,6 +1765,37 @@ int qman_query_wq(u8 query_dedicated, struct qm_mcr_querywq *wq)
 }
 EXPORT_SYMBOL(qman_query_wq);
 
+int qman_testwrite_cgr(struct qman_cgr *cgr, u64 i_bcnt,
+			struct qm_mcr_cgrtestwrite *result)
+{
+	struct qm_mc_command *mcc;
+	struct qm_mc_result *mcr;
+	struct qman_portal *p = get_affine_portal();
+	unsigned long irqflags __maybe_unused;
+	u8 res;
+
+	PORTAL_IRQ_LOCK(p, irqflags);
+	mcc = qm_mc_start(&p->p);
+	mcc->cgrtestwrite.cgid = cgr->cgrid;
+	mcc->cgrtestwrite.i_bcnt_hi = (u8)(i_bcnt >> 32);
+	mcc->cgrtestwrite.i_bcnt_lo = (u32)i_bcnt;
+	qm_mc_commit(&p->p, QM_MCC_VERB_CGRTESTWRITE);
+	while (!(mcr = qm_mc_result(&p->p)))
+		cpu_relax();
+	DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) == QM_MCC_VERB_CGRTESTWRITE);
+	res = mcr->result;
+	if (res == QM_MCR_RESULT_OK)
+		*result = mcr->cgrtestwrite;
+	PORTAL_IRQ_UNLOCK(p, irqflags);
+	put_affine_portal();
+	if (res != QM_MCR_RESULT_OK) {
+		pr_err("CGR TEST WRITE failed: %s\n", mcr_result_str(res));
+		return -EIO;
+	}
+	return 0;
+}
+EXPORT_SYMBOL(qman_testwrite_cgr);
+
 int qman_query_cgr(struct qman_cgr *cgr, struct qm_mcr_querycgr *cgrd)
 {
 	struct qm_mc_command *mcc;
@@ -1793,6 +1824,33 @@ int qman_query_cgr(struct qman_cgr *cgr, struct qm_mcr_querycgr *cgrd)
 }
 EXPORT_SYMBOL(qman_query_cgr);
 
+int qman_query_congestion(struct qm_mcr_querycongestion *congestion)
+{
+	struct qm_mc_result *mcr;
+	struct qman_portal *p = get_affine_portal();
+	unsigned long irqflags __maybe_unused;
+	u8 res;
+
+	PORTAL_IRQ_LOCK(p, irqflags);
+	qm_mc_start(&p->p);
+	qm_mc_commit(&p->p, QM_MCC_VERB_QUERYCONGESTION);
+	while (!(mcr = qm_mc_result(&p->p)))
+		cpu_relax();
+	DPA_ASSERT((mcr->verb & QM_MCR_VERB_MASK) ==
+			QM_MCC_VERB_QUERYCONGESTION);
+	res = mcr->result;
+	if (res == QM_MCR_RESULT_OK)
+		*congestion = mcr->querycongestion;
+	PORTAL_IRQ_UNLOCK(p, irqflags);
+	put_affine_portal();
+	if (res != QM_MCR_RESULT_OK) {
+		pr_err("QUERY_CONGESTION failed: %s\n", mcr_result_str(res));
+		return -EIO;
+	}
+	return 0;
+}
+EXPORT_SYMBOL(qman_query_congestion);
+
 /* internal function used as a wait_event() expression */
 static int set_p_vdqcr(struct qman_portal *p, struct qman_fq *fq, u32 vdqcr)
 {
diff --git a/drivers/staging/fsl_qbman/qman_private.h b/drivers/staging/fsl_qbman/qman_private.h
index 2265daf..eb7f70b 100644
--- a/drivers/staging/fsl_qbman/qman_private.h
+++ b/drivers/staging/fsl_qbman/qman_private.h
@@ -153,6 +153,14 @@ struct qman_portal *qman_create_affine_slave(struct qman_portal *redirect,
 const struct qm_portal_config *qman_destroy_affine_portal(void);
 void qman_destroy_portal(struct qman_portal *qm);
 
+/* This CGR feature is supported by h/w and required by unit-tests and the
+ * debugfs hooks, so is implemented in the driver. However it allows an explicit
+ * corruption of h/w fields by s/w that are usually incorruptible (because the
+ * counters are usually maintained entirely within h/w). As such, we declare
+ * this API internally. */
+int qman_testwrite_cgr(struct qman_cgr *cgr, u64 i_bcnt,
+	struct qm_mcr_cgrtestwrite *result);
+
 #ifdef CONFIG_FSL_QMAN_FQ_LOOKUP
 /* If the fq object pointer is greater than the size of context_b field,
  * than a lookup table is required. */
diff --git a/include/linux/fsl_qman.h b/include/linux/fsl_qman.h
index c12cbd3..3d28529 100644
--- a/include/linux/fsl_qman.h
+++ b/include/linux/fsl_qman.h
@@ -1819,6 +1819,12 @@ int qman_modify_cgr(struct qman_cgr *cgr, u32 flags,
 int qman_query_cgr(struct qman_cgr *cgr, struct qm_mcr_querycgr *result);
 
 /**
+ * qman_query_congestion - Queries the state of all congestion groups
+ * @congestion: storage for the queried state of all congestion groups
+ */
+int qman_query_congestion(struct qm_mcr_querycongestion *congestion);
+
+/**
  * qman_alloc_cgrid_range - Allocate a contiguous range of CGR IDs
  * @result: is set by the API to the base CGR ID of the allocated range
  * @count: the number of CGR IDs required
-- 
2.2.2
--
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